| PVA/接枝改性淀粉热塑性生物降解材料的制备及应用 |
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| 引用本文： | 周向阳,贾德民,崔跃飞,严志云. PVA/接枝改性淀粉热塑性生物降解材料的制备及应用[J]. 工程塑料应用, 2011, 39(6): 53-56 |
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| 作者姓名： | 周向阳 贾德民 崔跃飞 严志云 |
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| 作者单位： | 1. 仲恺农业工程学院高分子材料研究所,广州,510225
2. 华南理工大学材料学院,广州,510641 |
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| 基金项目： | 广东省高等学校科技创新重点项目，仲恺农业工程学院自然科学基金项目 |
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| 摘 要： | 以过硫酸铵为引发剂,采用固相法合成了乙酸乙烯酯(VAC)/玉米淀粉接枝共聚物.将其与聚乙烯醇(PVA)、加工助剂在流变仪中共混,制备了PVA/接枝改性淀粉热塑性生物降解材料;分别研究了淀粉接枝共聚物对PVA/淀粉/接枝改性淀粉共混物的加工流动性、耐水性、力学性能和生物降解性能及形态结构的影响.结果表明,PVA/淀粉/接...
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| 关 键 词： | 淀粉接枝共聚物 乙酸乙烯酯 聚乙烯醇 热塑性加工 |
PREPARATION AND APPLICATION OF PVA/GRAFTED STARCH BIODEGRADABLE THERMOPLASTIC |
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| Zhou Xiangyang,Jia Demin,Cui Yuefei,Yan Zhiyun. PREPARATION AND APPLICATION OF PVA/GRAFTED STARCH BIODEGRADABLE THERMOPLASTIC[J]. Engineering Plastics Application, 2011, 39(6): 53-56 |
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| Authors: | Zhou Xiangyang Jia Demin Cui Yuefei Yan Zhiyun |
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| Affiliation: | (1.Research Institute of Polymer Meterails,Zhongkai University of Agriculture and Engineering,Guangzhou510225,China; 2.College of Materials Science and Technology,South China University of Technology,Guangzhou510640,China) |
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| Abstract: | The graft copolymer of corn starch and vinyl acetate(VAC)(starch-g-VAC) was synthesized by using ammonium persulfate as initiator via solid phase graft copolymerization.Starch-g-VAC,PVA and processing additives were blended in Haake rheometer to prepare the thermoplastic PVA/starch-g-VAC biodegradable.The processing properties,water resisting properties,mechanical properties and biodegradation properties were studied respectively.Results showed that starch-g-VAC improved the interface compatibility of the PVA/starch/starch-g-VAC blends.The blends exhibited better processing properties,water resisting properties,mechanical properties and biodegradation properties.The tensile strength and elongation at break strain was 6.85 MPa and 275% respectively when relative humidity reached 50%.After 80 days biodegradation,the weight loss percentage of the blends was 50.3%.The films and disposable tableware prepared by the PVA/starch/starch-g-VAC blends had many excellent traits,inducing its potential extensive applications in the biodegradable materials area. |
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| Keywords: | starch graft copolymer vinyl acetate PVA thermoplastic processing |
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